每日口說挑戰 【TED-Ed】為什麼聲音會隨著年紀增長而改變？ (Why does your voice change as you get older? - Shaylin A. Schundler)

今日挑戰句子

So how exactly does our voice box work, and what causes these shifts in speech?

青春期時開始第一次重大的轉變，你的聲音開始加沉。